The whole thing seems very similar to Air France 447 which crashed in the Atlantic Ocean in 2009. From what I've seen, the bodies look fairly undamaged and so do the pieces of luggage that they've recovered so far. Even stranger is the fact that one of the bodies was wearing a life jacket but the pilot didn't have time to issue a mayday call. The searchers think they found the plane in one piece sitting on the ocean floor in shallow waters so it shouldn't be too long before they find the rest of the bodies and recover the black box recorders. Hopefully by then we'll know what exactly went wrong and why the plane dropped out of the sky as quickly as it did.

Maybe a stall and some passengers took the time to wear their life jackets during the stall.